So you can keep 1-15 bettas in a 30 gallon, though 12 would probably be better than 15. I didn't think you'd want to keep less than 5 bettas in such a big tank-the more bettas the better!-so I didn't put those numbers in. I have no idea about females.

So you can keep 1-15 bettas in a 30 gallon, though 12 would probably be better than 15. I didn't think you'd want to keep less than 5 bettas in such a big tank-the more bettas the better!-so I didn't put those numbers in. I have no idea about females.

this is completely unreasonable, as dividing a 29 gallon aquarium 15 ways would leave you with almost no horizontal space. keeping an aquarium this tight cleaned or even decorating it would be a huge feat. I couldn't even imagine putting more than 3-4 in it.